<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    <form action="http://localhost:8080/upload" method="post" enctype="multipart/form-data">
      用户：<input type="text" name="username"><br>
      密码：<input type="password" name="password"><br>
      <input type="file" name="f1">
      <input type="submit" value="提交">
    </form>
  </body>
</html>
